Ran this for my friends this past weekend for Halloween vibes and had probably too much fun.
Took a little over 3 hours to complete. My players ended up not even exploring the cottage, they were hell bent on getting up to the lighthouse, and managed to light it up in time. Technically saved the cargo ship but revealed the beast and cursed everyone aboard.
One player joined the beast at the end, two fell from the falling rickety steps and died, one got taken out by a wave crashing into the lighthouse, and the other escaped on the dingy tho unclear if they lived.
Very enjoyable, read through it twice and was ready to run! Oh also ran this with Shadowdark, their torches/lanterns ran out at some crazy moments!